I only say this because someone like Corki and Quinn who always has their ultimate available and is always using it makes it really annoying when it goes on cooldown because you wanted to farm minions, red buff, or take out a ward. Plus it does reduce its power slightly by making it slightly more difficult to proc for melee champions.

Overall the item is good, but the second passive is too strong and does not offer very good skillful gameplay since it is all about spamming ALL of your abilities and attacking mindlessly. So I have a proposal to make the second passive a little more interesting and skillful.

UNIQUE Passive - Essence Flare:

For the next 8 seconds, gain 30% bonus attack speed and your basic attacks reduce the most recently cast basic ability's current cooldown by 70% one time per cast of that ability.

Rather than for 8 seconds you reduce your basic abilities current cooldowns by 25% on hit, granting a spell weaving effect with your basic attacks by procing the effect, cast a spell, attack, cast another spell, attack, etc. to weave in attacks and spells rather than mindlessly spam abilities and attacks and turn off your brain.

This change also helps fixes exploit cases like with Master Yi and Renekton who can get MULTIPLE cooldown reduction procs from a single attack by restricting it to one bigger cooldown reduction that gains benefits from quickly following up the spell cast with a basic attack and needing to spell weave your attacks rather than use every, spam attacks, and then immediately use everything again with no cooldown gameplay element to it.